How does Feng Shui turn purple when the Pearl of Yunshan Wandian goes to sea?

When your deed is completed, if Feng Shui is a pearl in the sea, then only by piling up houses, more than 800, can you become a golden phoenix facing the emperor. However, your feng shui has reached its peak and can't be improved any more. Only when the original deed was golden phoenix's geomantic omen facing the emperor and the furniture piled up can it become the top purple wind geomantic omen from the East.